ADP1650

Rev. 0 | Page 7 of 32

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

TOP VIEW

(BALL SIDE DOWN)

Not to Scale

PGND

SGND

VIN

SW

GPIO2

GPIO1

VOUT

STROBE

EN

LED_OUT

SDA

SCL

1

A

B

C

D

23

BALL A1

INDICATOR

Figure 4. Pin Configuration

Table 6. Pin Function Descriptions

Pin No.

Mnemonic

Description

A1

PGND

Power Ground.

A2

SGND

Signal Gound.

A3

VIN

Input Voltage for the Device. Connect an input bypass capacitor close to this pin.

B1

SW

Boost Switch. Connect the power inductor between SW and the input capacitor.

B2

GPIO2

ILED/TX2/ADC. Mode is register selectable. Red indicator LED current source or TxMASK2 or ADC

input.

ILED Mode. Connect to red LED anode. Connect the LED cathode to GND.

TxMASK2 Mode. Reduces the current to the programmable TxMASK2 current.

ADC Mode. This pin is used as the input pin for the ADC.

B3

GPIO1

Torch/TX1. Mode is register selectable. External torch mode or TxMASK1 input.

Torch Mode. Enables the integrated circuit (IC) in direct torch mode.

TxMASK1 Mode. Reduces the flash current to the programmable TxMASK1 current.

C1

VOUT

Boost Output. Connect an output bypass capacitor very close to this pin. This is the output for the

5 V external voltage mode.

C2

STROBE

Strobe Signal Input. This pin synchronizes the flash pulse to the image capture. In most cases, this

signal comes directly from the image sensor.

C3

EN

Enable. Set EN low to bring the quiescent current (Iq) to <1 μA. Registers are set to their defaults

when EN is brought from low to high.

D1

LED_OUT

LED Current Source. Connect this pin to the anode of the flash LED.

D2

SDA

D3

SCL